Remove outdated toc_pages.txt, add new Go modules for IHK Chemnitz PDF rendering including diagrams, tables, and TOC functionality.

pdf_numbering.go

@@ -0,0 +1,27 @@
+package main
+
+// NumberingType controls the page numbering style rendered in the footer.
+type NumberingType int
+
+const (
+	NumNone   NumberingType = iota // No page number (title page, declaration)
+	NumRoman                       // Roman numerals for front matter (II, III, …)
+	NumArabic                      // Arabic numerals for main body (1, 2, …)
+)
+
+// toRoman converts a positive integer to an uppercase Roman numeral string.
+func toRoman(n int) string {
+	if n <= 0 {
+		return ""
+	}
+	vals := []int{1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1}
+	syms := []string{"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"}
+	result := ""
+	for i, v := range vals {
+		for n >= v {
+			n -= v
+			result += syms[i]
+		}
+	}
+	return result
+}